In response to the demand for a loudspeaker system with the performance of Model 105.2 but in a smaller package, KEF introduced Model 105.4.

This new system followed the same basic design philosophy of the 105.2, but with a more compact bass enclosure comprising two 8” bextrene coned bass drivers in place of the single 12” unit, and the new T33 fabric domed tweeter in place of the melinex domed T52. The result was a system that had the essence of the 105.2 sound, its tonal neutrality and pin point stereo imaging, but at the expense of a slight loss in bass extension.

Consistent with the 105.2, it included S-Stop protection circuitry, a peak level indicator to warn of amplifier clipping, and all production systems benefited from KEF’s Reference methodology which matched the response of every system to within 1dB of the design reference, with each pair to within 0.5dB of each other.